（2010四川省成都市35. 1）I won't be able to understand what you say,_______you speak too quickly.
A.if B.though C.because
（2010浙江省湖州市22，1）-Is everyone here today?
-No.Tom is at home_____he has got a bad cold.
A.because B.if C.until D.unless
（2010山西省27，1）In summer , food goes bad easily ________ it is put in the refrigerator.
A. until B. if C. unless
（2010河南省25，1）________it's difficult to make her dream come true，she never gives up
A.Though B.Unless C.Because D.If
（2010山东省莱芜市27，1）-I hear Jack Chan will come to Laiwu next week.
-Really? _______ he comes, my younger sister will be very happy,
A．If B．Until C．Unless D．Before
（2010贵州省铜仁市35，1）- May I go to the concert with you?
- I'm afraid not ____ you have a ticket, because I have only one.
A. since B. if C. unless D. though
（2010山东省菏泽市27，1）Mary spends a lot of money on clothes _______ her family is not rich.
A. because B. though C. if D. so
（2010黑龙江省鸡西市29，1）Usually, we don't know how important something is ______ we lose it.
A. or B. until C. as soon as
（2010广西省定西市15，1）She had a stomachache________she ate something bad.
A. so B. because C. or D. although
(2010福建三明29. 1)Many children like fried chicken _______it is unhealthy food.
A.if B.because C.although
（2010广西南宁32. 1）Mr.Brown knew nothing about the good news ______his wife told it to him.
A.before B.after C.since D.if
（2010四川达州29. 1） I don't know if Jack________. If he________ , call me, please.
A. will come; will comes B. comes; come
C. comes; will come D. will come; comes
（2010天津市41，1）We won't start the meeting ______our teacher arrives.
A.though B.until C.while D.or
（2010青海省宁夏33，1）-Did you catch what the teacher said?
-No. She spoke so fast _______ I couldn't hear her very clearly.
A. which B. that C. when D. since
（2010辽宁省沈阳市8，1） ____ it snowed heavily yesterday, nobody in our class missed the lesson．
A．Though B．Because C．Unless D．Since
（2010江苏省镇江市8，1）A tourist will easily lose his way in Beijing _________ he has a map or a guide.
A. if B. because C. unless D. when
（2010广东省18，1）The teacher speaks very loudly________all the students can hear her.
A. so that B. because C. since D. when
(2010河北省卷43. 1) There are lots of things ________ I need to prepare before the trip.
A. who B. that C. whom D. whose
（2010四川省自贡市38. 1）Jim dislikes people ______talk much but never do anything .
A.who B.whom C.whose
（2010江苏省南京市9. 1）-I hear Sam has gone to Qiandiao for his holiday.
-Oh,how nice!Do you know when he_______?
A.left B.was leaving C.has left D.had left